Algorithms overlaying a Stitch Fix photo shoot

Algorithms Team

Weaving data science pervasively throughout our business

"There's an algorithm for that!" (Take the tour to learn more.)
Algorithms decorative arrow

From the algorithms blog

Our Pulse

A row of data analysts working on laptops
Data artistry
We love what we do: Quantify art and fashion to build recommendation algorithms to make our clients look their best.
Technological greenfield
We’ve built just a fraction of the tools and solutions that we need. The combination of data and fashion puts us in a unique place where we can forge the next generation of tools and methods.
Focus on what matters
Our data is information-rich and resides in robust and easy to access platforms. This allows us to focus on the models, methods, and code to achieve our objectives.

Our Teams

A casual discussion between Stitch Fix employees
Client Algorithms
Understand our clients, predict their demands, and optimize operations.
Styling Algorithms
Meet the recommendation engineers: Where the art and fashion is quantified and shipped.
Merch Algorithms
Mastering the science of clothing, inventory, and complex logistics.
Data Platform
Build robust and powerful technologies to store, access, and compute data.

Academic Collaborations

Social Algorithms Labs @ Stanford (SOAL)

The Algorithms team works closely with SOAL where a group of interdisciplinary researchers focus on social and economic science and computational science and algorithms.

Stanford Industry Affiliates

We are a member of the Industrial Affiliates Program of the Statistics Department at Stanford, helping us stay abreast of the latest statistical techniques and build relationships with statistical researchers.

algorithms Team

John Clevenger

John Clevenger
Client Algorithms

John is a data scientist with a passion for inference under uncertainty. He prefers his inferences to be logically coherent but generally uses null hypothesis significance testing anyway. He's a big fan of being outside with his wife, hazy ipas, and the Dodgers. Past John was a cognitive scientist who used to be a philosopher.

Andy Almand-Hunter

Andy Almand-Hunter
Merch Algorithms

Andy likes espresso, rock climbing, and computer code. He loves the unreasonable effectiveness of mathematics in everything from physics to fashion. Hails from Maine, but has slowly been making his way west, and is happy to finally call the Pacific coast home.

Patrick Foley

Patrick Foley
Styling Algorithms

Patrick enjoys math and maps, and he loves Arizona (U of A) college basketball. He is language agnostic, and prefers trying the simplest things first. AZ -> CA -> PA -> CA.

Kurt Bollacker

Kurt Bollacker
Data Platform

Kurt has been a scientist, a software engineer, a digital archivist, and random problem solver. He also engages in cake baking, circus aerial, and biking around the city. He enjoys problems that have no obvious solution. You can always bribe him with excellent food, especially desserts.

Jeff Magnusson

Jeff Magnusson
Data Platform

Jeff likes Python, coffee, and combining the two to build data infrastructure that’s incredibly easy and fun to use. Hails from Texas.

Tara Lydiard-Martin

Tara Lydiard-Martin
Client Algorithms

Tara loves using data and visualizations to make complex systems feel intuitive. In her free time she enjoys ultimate frisbee, dancing, and the Brazilian martial art of capoeira. Hails from Seattle.

Oz Raza

Oz Raza
Data Platform

Oz enjoys trying to distill complex interactions into their most basic parts using machine learning. In his free time he can be found reading, climbing, playing at the FLGS, and exploring San Francisco through it's restaurants and coffee shops. Most recently hails from Canada.

Kevin Zielnicki

Kevin Zielnicki
Styling Algorithms

Kevin is particularly interested in the impact algorithms can have when used as an amplifier for human creativity. After a past life as a quantum mechanic, he is happy to work with data that can be observed without changing its value.

Derek Bennett

Derek Bennett
Data Platform

Derek’s passion is creating applications that offer new insights and support decision making. He is equally comfortable playing with new technologies or tinkering with antiquated photography equipment. When not developing with Scala, Java or Python, Derek enjoys hiking and outdoor activities along with travel, art, and wine tasting. Care and feeding can be accomplished with a good cup of coffee, an IPA, or a long lunch.

Chris Rinaldi

Chris Rinaldi
Merch Algorithms

In a previous life, Chris worked with the Department of Homeland Security and the US Army to create predictive models and perform threat analyses. Now, he uses data to help design and analyze clothing.

Thomas Millar

Thomas Millar
Data Platform

Despite graduating and becoming a full-time platform engineer here at Stitch Fix, he will forever be seen as our intern. He may spend his days wrestling distributed systems into submission and his nights cooking, but he’s only really good for grabbing the rest of the team coffee. Thanks Thomas!

Jeff Schecter

Jeff Schecter
Styling Algorithms

Jeff appreciates clever loss functions, latent spaces with interesting properties, and generative models for funky high-dimensional distributions. He makes wheel-thrown ceramics and comes from North Carolina.

Dan Tasse

Dan Tasse
Merch Algorithms

Dan grew up writing code, then discovered that the most fun part of that was learning new things from data. You might find him traveling to kind of inconvenient places. Also: bikes, coffee, amaro, Talking Heads, word games, Pittsburgh.

Danielle Quinn

Danielle Quinn
Client Algorithms

Dan lives her life by the three Rs — running, reading, and ‘rithmatic. She loves the thrill of building and analyzing data driven models to gain insights about the real world. When not at work, you’ll probably find her out for a run, curled up with a good book, or spending time with her friends and family. Hails from Philly (yes, an Eagles fan, but not the battery-throwing kind).

Chris Moradi

Chris Moradi
Styling Algorithms

Chris likes to learn new things and share what he knows with others. He believes his jokes are like fine wine: they get better with age and benefit from being explained in great detail. In his free time, he writes music and likes to spend time with his teacher/comedian wife and high-fiving cat, Agent Cooper.

Mark Dijkstra

Mark Dijkstra
Global Optimization

Mark loves simplicity in models, and using data to understand complex phenomena. Hails from the Netherlands, though a career in astronomy led him all over the world with his family for many years. It seems only fitting he now works on global optimization. Mark also likes the ocean, its inhabitants, SUP, and lifeboats.

Xinyu Tian

Xinyu Tian
Client Algorithms

Xinyu appreciates logics. Exploring logics from data is the most thrilling thing for her. She likes to be challenged and hates living a boring life.

Natalia Gardiol

Natalia Gardiol
Styling Algorithms

Natalia loves brains and figuring out how they make decisions under uncertainty. She holds a PhD in computer science from MIT, and is fond of riding, racing, breaking, fixing, and falling off of all kinds of bicycles. On a constant lookout for pithy epitaphs, Natalia believes a good bias is hard to find.

Meaghan Paulosky

Meaghan Paulosky
Data Engineering

Meaghan was first bitten by the data bug when she tried analyzing the impact of sleep deprivation on college test scores in lieu of submitting a term paper. Her professor still made her write the paper, but she decided to continue building analyses that could make life a little easier. Other interests include hiking, road trips, and trying out new hobbies - currently it’s boxing. Hails from Philadelphia, but she will not chant EAGLES. Go Big Blue!

Diane Ivy

Diane Ivy
Merch Algorithms

Diane loves finding answers from data. While originally from South Carolina, she loves the Bay Area and is happy to have escaped New England winters. Interests include running, yoga, Dunkin' Donuts iced coffee, and her dog (Oscar).

Diyang Tang

Diyang Tang
Merch Algorithms

Diyang loves using data to figure things out. Similarly, she likes puzzlehunts, orienteering, knitting, and fiction book clubs.

Balaji Rengarajan

Balaji Rengarajan
Client Algorithms

Balaji hails from India and makes his way to Stitchfix via Austin and Madrid. He's an engineer by training, and was building wireless network that could think for themselves before getting hooked by data. An aficianado of Occam's razor, he enjoys building intuitive models for complex problems and translating math to elegant data structures and robust, maintainable code. When not data sciencing, he loves traveling, freestyle cooking, or being on a trail with or without his bike.

Daniel Marthaler

Daniel Marthaler
Merch Algorithms

Daniel Marthaler is an applied mathematician on the Merch Algorithms team trying to figure out how to make computers learn to learn. He surrounds himself with labradoodles, good conversation and people who like building legos.

Mithila Joshi

Mithila Joshi
Data Platform

Mithila loves building data products that power decision making and is super excited to be working in the realm of Fashion and Technology (A dream job she never thought was possible!) Outside of work, she enjoys a cup of tea (chaivinist alert!), a good mystery novel, traveling, dancing (Bollywood, [Ball/Bath]room) and eating all things spicy though she is mostly found wolfing down desserts.

Reza Sohrabi

Reza Sohrabi
Styling Algorithms

Reza loves working at Stitch Fix because it is at the forefront of applying machine learning to real-world problems. He is passionate about AI, especially NLP. He loves cooking, taking long walks, listening to post-rock music, and playing chess and poker.

Ivan Teo

Ivan Teo
Client Algorithms

Ivan used to simulate biomolecular systems in a past life. He now spends much of his time tackling more macroscopic problems using statistics, machine learning, and sometimes pure guesswork. Outside of work, he enjoys wine, whisky, rockclimbing, hiking, playing the piano, and aiki-jujutsu.

Molly Davies

Molly Davies
Styling Algorithms

Molly loves statistics, especially tricky causal inference problems with goopy dependent data. She also loves music: past Molly played a lot of piano, present Molly is an enthusiastic violin student. She needs regular doses of outside-time to feel whole and has had some of her best ideas while squishing aphids in her garden.

Han Lai

Han Lai
Merch Algorithms

Han comes from the background of semiconductor physics using math to describe physical phenomenon. Now he spends his time using math to describe human behaviors. Outside of work, he enjoys football, cooking, craft beer and hiking.

Jared Vasquez

Jared Vasquez
Merch Algorithms

Jared has a background in experimental particle physics, where he led teams within the ATLAS collaboration performing precision measurements of the Higgs boson. Since leaving academia, Jared has worked as a data scientist creating production models for use cases in finance, aviation, and renewable energy. He enjoys music, bad movies (some good ones), and spending time with his dog.

Jim Kubicek

Jim Kubicek
Data Engineering

Jim joins us from Collective Health where he lead the Data Engineering team. Previously he has worked at Twitter, Smule and Capital One. He has a PhD in Mechanical Engineering, but likes to talk about his research more than he likes to actually perform his research. In his spare time he enjoys backpacking, snowboarding and teaching his little girls how to eat spicy food.

Susan Chin

Susan Chin
Data Engineering

Susan loves unearthing interesting patterns behind data and empowering people to make decisions based on numbers. She has a sweet tooth and is obsessed with boba. Born in Burma, but loves to call San Francisco her home and can be found at various dog parks with her dog, Benji, on the weekends.

Katherine Schinkel

Katherine Schinkel
Merch Algorithms

Katherine is a Bay Area transplant from the East Coast with diverse industry experience ranging from dating apps to bra sizing and from startups to larger companies. When not optimizing everything, Katherine enjoys sharing her new hobby of mixology with friends and family.

Jonathan Landy

Jonathan Landy
Global Optimization

Jonathan lives in Oakland. He is a student of 19th century mathematics.

Brent Follin

Brent Follin
Inventory Forecasting

Brent ranks style guides, containers, and API contracts somewhere in the top 10 of mankind's inventions. A data scientist by training, outlook, and title, he also often finds himself diving into infrastructure, frameworks, and system architecture to get data insights delivered in the best, most scalable way. An Appalachian transplant, Brent has a mountain soul, and spends his free time finding new quiet places in and around the Bay.

Ramandeep Singh

Ramandeep Singh
Data Platform

Ramandeep has a background in distributed systems, java virtual machine, concurrent programming and machine learning. He likes to blog, read sci-fi and non fiction novels, and go on long drives.

Aaron Rosenbaum

Aaron Rosenbaum
Client Algorithms

Aaron is a data scientist with a background in financial policy. He’s from New Jersey but doesn’t miss the east coast weather. He enjoys machine learning and experiments of all kinds, including with his pressure cooker.

Stefan Müller

Stefan Müller
Client Algorithms

Stefan is a Math professor turned data scientist who loves solving open-ended problems. He enjoys traveling the world (and occasionally stays somewhere for a few years), spending time outdoors / exercising, and being a dad to two boys. Sometimes plays or coaches football, and refuses to refer to it as soccer. Also a coffee snob and beer/wine enthusiast. Hails from Germany.

Matt Burgess

Matt Burgess
Merch Algorithms

Matt is a computer scientist with a broad range of interests and a preference for application but an appreciation for theory. He loves growing flowers in his garden and riding his bike around the bay area.

Nathan Selikoff

Nathan Selikoff
Data Platform

Nathan has been programming and making art since he was a little kid, sitting at a Commodore 64 staring at that blinking cursor - the pulse of possibility. He loves bringing interactive experiences to life, playing music with friends, gardening, and fermenting all the things.

Tiffany Cheng

Tiffany Cheng
Merch Algorithms

Tiffany enjoys grappling with ambiguous problems and embarking upon the nonlinear adventures that they often yield. Her background is in statistics and public health. Outside of work, she enjoys hiking, running, improving her turnout for ballet, and catching performing arts shows around the Bay.

Jonah Liebert

Jonah Liebert
Data Platform

Jonah loves working with collaborative folks building practical, useful systems and software. He enjoys time with his family most of all. Otherwise, he can often be found admiring and listening to records - mostly Metal, Rock & Jazz.

Philip Starhill

Philip Starhill
Client Algorithms

Philip has spent most of his life in California and most of his career working on mathematical problems. He enjoys learning about the history of philosophy, especially epistemology, and being in the company of people whose talents exceed his own.

Merve Kovan

Merve Kovan
Global Optimization

Merve enjoys understanding the big picture and filling in the puzzle pieces with data. Puzzles are in her life outside of work, as well as reading, dancing and making things (via knitting, cooking and random arts and crafts).

Vasanth Kalingeri

Vasanth Kalingeri
Merch Algorithms

Vasanth enjoys building models for diverse applications and engineering systems. Outside of work, he likes to spend time swimming or doing yoga.

Martin Amps

Martin Amps
Austin

Martin is a software engineer that enjoys reverse-engineering, building innovative products and finding practical solutions to business problems. Though originally from the UK, he has spent almost a decade living in, and exploring the USA. In his free time he loves to hike, skydive, travel and the consumpion of good wine.

Justin Lee

Justin Lee
San Francisco

Justin loves the collaborative aspect of building software. He is passionate about competing in Brazilian Jiu Jitsu, perfecting his homemade pizza, and Salsa and Lindy Hop dancing. He loves chihuahuas.

Meng Zhao

Meng Zhao
Merch Algorithms

Meng's background is in statistics and survival analysis. She previously worked on pricing and yield management for perishable inventory and is interested in all kinds of optimization problems. She enjoys rock climbing, card games, and traditional drawing, and is constantly yearning to be back in the Canadian Rockies.

Dirk Sierag

Dirk Sierag
Styling Algorithms

Dirk Sierag has a strong background in applying data science and operations research in pricing and revenue management for airlines, hotels, and live events. Dirk loves traveling across the world, to experience all of the rich cultures and extraordinary life and nature on our lovely planet.

Carl Morris

Carl Morris
Styling Algorithms

Carl is an operations research data scientist with experience developing optimization, simulation, and machine learning algorithms. Previously, he worked for Amazon and JD.com in areas such as data center capacity planning, last mile delivery, instock planning, and pricing. He received a Ph.D. in Operations Research from Georgia Tech. Outside work, he enjoys exploring new places, staying fit, and most of all spending time with his family.

Colin Jemmott

Colin Jemmott
Styling Algorithms

During the day Colin builds recommender systems, but often sneaks off for bike rides. His weekends are filled with gardening, making things from wood and steel, and tinkering in the shop.

Sue Ye

Sue Ye
Styling Algorithms

Sue is a data scientist interested in all kinds of recommendations and NLP algorithms. Besides work, she has the best badminton and cooking skill among the friends who likes playing piano.

Tom Plagge

Tom Plagge
Merch and Ops Algorithms

Tom is a data scientist and recovering astronomer. He enjoys all manner of outdoors activities and is an enthusiastic, if not altogether competent, cook and homebrewer. He lives in the East Bay with his wife and twin girls, his dog, his good cat, and his evil cat.

Tianji Li

Tianji Li
Data Platform

Hacker, dad of two.

Susrutha Gongalla

Susrutha Gongalla
Fix Recommendations

Susrutha is a data scientist who recently transitioned into machine learning engineering. She is passionate about seeing her work have an impact in the real world. Outside of work, she loves to play with her dog and spend time outdoors!

Anelise Newman

Anelise Newman
Style Discovery

Anelise is excited about building ML-powered systems that people interact with. Previously, she was at MIT and Stanford doing research in computer vision and human-computer interaction. She enjoys sewing and makes most of her own clothes. When she is not coding or working on a new outfit, she is probably cooking, hiking, or gardening.

DilipKumarVarma Jetty

DilipKumarVarma Jetty
Charlotte, NC

Dilip is technology enthusiast, problem solver. Skilled in cloud technologies and cloud native implementations. Outside of the job, he likes reading books, research, watching movies with family and friends.

Jeff Cooper

Jeff Cooper
Merch Algorithms

Jeff is a data leader who loves trying to simplify complicated problems (and then complicate them again). He once marched in the Rose Parade, very badly.

Kriti Bansal

Kriti Bansal
Data Engineering

Kriti loves churning data and solving business problems. She is creative, inquisitive, analytical and a quick learner. Spicy food is an absolute guilty pleasure. Outside of work, she could be found travelling or on her couch, binging on a web series.

Luran He

Luran He
Client Algorithms

Luran loves cooking, chess, reading, and singing, but is only any good at two of them. His background is math but his greatest weakness is simple arithmetic.

Vinod Cheriyan

Vinod Cheriyan
Merch Algorithms

Vinod loves working with teams and models (the beautiful, mathematical kind). He is passionate about building systems that lie in the intersection of OR and ML, data science and software engineering. In his spare time, he loves to read, solve math puzzles, do calligraphy and write short poems.

Javad Hashemi

Javad Hashemi
Shopping Algorithms

Javad is a data scientist interested in NLP, search, and AI ethics.

Come Work with Us!

We’re a diverse team dedicated to building great products, and we’d love your help. Do you want to build amazing products with amazing peers? Join us!